preservation

Key Takeaways

• Preservation means keeping original records intact — not copied, trimmed, or modified — from the moment of the incident until no longer needed.
• Electronic records on rolling retention schedules may be overwritten within hours or days. Preservation must be initiated before that window closes.
• Document what was preserved, who preserved it, and where it's stored. A preserved file without a chain-of-custody record creates questions.

Plain-English meaning

Preservation is the act of keeping original records, files, and evidence from being altered, deleted, overwritten, or lost. In truck accident and fleet safety contexts, it applies to dash cam footage, ELD records, telematics data, driver statements, physical evidence, and paper documents.

Preservation is the first step in evidence management, before any analysis, sharing, or review. Evidence analyzed before it is preserved may be inadvertently compromised.

When it becomes urgent

Electronic records on rolling retention schedules — dash cam footage, telematics data, some ELD platforms — may be overwritten within hours or days of an incident. Preservation must be initiated before that window closes.

When litigation is anticipated or underway, a legal hold extends the preservation obligation to all potentially relevant records, overriding normal retention schedules. Continuing to overwrite records after a legal hold is in effect creates serious legal exposure.

What to document when preserving

Preservation without documentation creates a gap almost as problematic as no preservation at all. For each preserved record, note: what was preserved (specific file name or record type), who initiated preservation, when it was done, where the preserved copy is stored, and who has access to it.

This documentation becomes the chain of custody for the preserved record. If the file is later shared with an insurer, attorney, or investigator, the preservation record shows it arrived in the same condition it was collected — that the file wasn't modified, trimmed, or recreated after the fact.